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DrainLift WS 1100 | Wilo
Your advantages
Wilo-DrainLift WS 900-1100

Your advantages

  • Deposit-free collecting space
  • High stability due to hemispherical shape of the bottom of the pump chamber
  • Four inlets can be selected onsite
  • Stainless steel pipes in V4A
Series description


Plastic pump chamber for insertion into the ground


Pumping of sewage containing faeces or pre-cleaned sewage that cannot be returned to the sewer system using natural falls, and for the draining of objects that are below the backflow level.




  • Pump chamber: PE
  • Pipework: Stainless steel
  • Cross bar: Stainless steel
  • Gate valve: bronze
  • Non-return ball valve: Cast iron
  • Surface coupling: Cast iron
  • Chain: Stainless steel


Installation-ready plastic shaft with complete pipework as single or twin-head pump station for concealed floor installation. Plastic shaft with four inlets for flexible connection and four integrated fins for increased anti-buoyancy. The bottom of the shaft is semi-spherical in order to minimize deposits on the bottom of the shaft and maximize the stability of the form.

Technical data

  • Inlet: 4x DN 150
  • Ventilation: 2x DN 100
  • Chamber cover for a maximum traffic load of 5 kN/m² (in accordance with DIN EN 124, Group 1)
  • Maximum pressure in the pressure pipe: 6 bar

Scope of delivery

  • Pump chamber with premounted pipework
  • Surface coupling
  • Non-return valve
  • Gate valve
  • Flush connection G 1½
  • Stainless steel chain including fastening hook
  • Supporting bar for level sensor or float switch including mounting accessories
  • Connection material for two DN 150 KG inlet pipes
  • Chain
  • Installation and operating instructions

For double pump stations, double the number of valves (surface couplings, gate valves,...) are supplied.